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NEET Sample Paper NEET Sample Test Paper-38

  • question_answer
    A galvanometer has a coil of resistance \[100\,\Omega \]and gives a full-scale deflection for 30 mA current. If it is to work as a voltmeter of 30 V range, the resistance required to be added will be

    A) \[900\,\Omega \]       

    B) \[1800\,\Omega \]

    C) \[500\,\Omega \]

    D) \[1000\,\Omega \] 

    Correct Answer: A

    Solution :

     Required resistance \[R=\frac{V}{{{i}_{g}}}-G\] \[=\frac{30}{30\times {{10}^{-3}}}-100=900\,\Omega \]


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